import operator


def prod(factor):
    return reduce(operator.mul, factor, 1)

def Solve():
    # Prepare data
    data  = '73167176531330624919225119674426574742355349194934'
    data += '96983520312774506326239578318016984801869478851843'
    data += '85861560789112949495459501737958331952853208805511'
    data += '12540698747158523863050715693290963295227443043557'
    data += '66896648950445244523161731856403098711121722383113'
    data += '62229893423380308135336276614282806444486645238749'
    data += '30358907296290491560440772390713810515859307960866'
    data += '70172427121883998797908792274921901699720888093776'
    data += '65727333001053367881220235421809751254540594752243'
    data += '52584907711670556013604839586446706324415722155397'
    data += '53697817977846174064955149290862569321978468622482'
    data += '83972241375657056057490261407972968652414535100474'
    data += '82166370484403199890008895243450658541227588666881'
    data += '16427171479924442928230863465674813919123162824586'
    data += '17866458359124566529476545682848912883142607690042'
    data += '24219022671055626321111109370544217506941658960408'
    data += '07198403850962455444362981230987879927244284909188'
    data += '84580156166097919133875499200524063689912560717606'
    data += '05886116467109405077541002256983155200055935729725'
    data += '71636269561882670428252483600823257530420752963450'
    size = len(data)
    data += '0000'

    result = 0
    for i in xrange(size):
        digit = [int(d) for d in data[i:i+5]]
        result = max(result, prod(digit))

    return result
